! exec pint --no-color lint --min-severity=xxx rules
! stdout .
cmp stderr stderr.txt

-- stderr.txt --
level=INFO msg="Finding all rules to check" paths=["rules"]
level=INFO msg="Checking Prometheus rules" entries=1 workers=10 online=true
level=ERROR msg="Execution completed with error(s)" err="invalid --min-severity value: unknown severity: xxx"
-- rules/0001.yml --
groups:
- name: foo
  rules:
  - alert: foo
    expr: rate(errors[2m]) > 0
    annotations:
      summary: 'error rate: {{ $value }}'
